/* ============================================================
   GEORGI CHERTKOV — PORTFOLIO 2026
   Design system: dark cartographic / acid-lime signal
   ============================================================ */

:root{
  --bg:      #0A0B08;
  --bg-2:    #101208;
  --panel:   #13150D;
  --ink:     #EFEDE4;
  --ink-dim: #B9B8AC;
  --mut:     #83847A;
  --lime:    #C9F24F;
  --lime-dk: #9DC72E;
  --org:     #FF6A3D;
  --line:    rgba(239,237,228,.13);
  --line-2:  rgba(239,237,228,.07);
  --font-display:'Syne',sans-serif;
  --font-body:'Space Grotesk',sans-serif;
  --font-mono:'JetBrains Mono',monospace;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --ease-exp:cubic-bezier(.87,0,.13,1);
  --pad:clamp(1.25rem,4vw,4rem);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  min-height:100vh;
}
::selection{background:var(--lime);color:#0A0B08}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit;background:none;border:none;cursor:pointer}
ul{list-style:none}

::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#2a2d20;border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:var(--lime-dk)}

/* ---------- grain ---------- */
.grain{
  position:fixed;inset:-50%;width:200%;height:200%;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity:.05;pointer-events:none;z-index:9000;
  animation:grain 8s steps(10) infinite;
}
@keyframes grain{
  0%,100%{transform:translate(0,0)}10%{transform:translate(-5%,-8%)}
  30%{transform:translate(3%,-12%)}50%{transform:translate(-9%,4%)}
  70%{transform:translate(7%,9%)}90%{transform:translate(-4%,6%)}
}

/* ---------- cursor ---------- */
.cursor-dot,.cursor-ring{
  position:fixed;top:0;left:0;pointer-events:none;z-index:9999;
  border-radius:50%;transform:translate(-50%,-50%);
}
.cursor-dot{width:8px;height:8px;background:var(--lime)}
.cursor-ring{
  width:38px;height:38px;border:1px solid rgba(201,242,79,.55);
  transition:width .3s var(--ease-out),height .3s var(--ease-out),
             background .3s,border-color .3s;
  display:flex;align-items:center;justify-content:center;
}
.cursor-ring .cursor-label{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;
  color:#0A0B08;opacity:0;text-transform:uppercase;white-space:nowrap;
}
.cursor-ring.is-hover{width:64px;height:64px;background:rgba(201,242,79,.14);border-color:var(--lime)}
.cursor-ring.is-view{width:88px;height:88px;background:var(--lime);border-color:var(--lime)}
.cursor-ring.is-view .cursor-label{opacity:1}
@media(pointer:coarse){.cursor-dot,.cursor-ring{display:none}}

/* ---------- preloader ---------- */
.preloader{
  position:fixed;inset:0;z-index:10000;background:var(--bg);
  display:flex;align-items:center;justify-content:center;flex-direction:column;
}
.preloader.done{pointer-events:none}
.pre-name{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.5rem,7vw,3.4rem);letter-spacing:-.02em;
  display:flex;flex-wrap:wrap;justify-content:center;overflow:hidden;
  max-width:92vw;text-align:center;
}
.pre-name span{display:inline-block;transform:translateY(110%);animation:preUp .8s var(--ease-exp) forwards}
.pre-name span.sp{width:.35em}
@keyframes preUp{to{transform:translateY(0)}}
.pre-count{
  position:absolute;bottom:2rem;right:var(--pad);
  font-family:var(--font-mono);font-size:clamp(2.6rem,8vw,6rem);
  color:var(--lime);font-weight:500;line-height:1;
}
.pre-tag{
  position:absolute;bottom:2.6rem;left:var(--pad);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  color:var(--mut);text-transform:uppercase;
}
.pre-bar{position:absolute;bottom:0;left:0;height:3px;background:var(--lime);width:0%}

/* ---------- page wipe transition ---------- */
.wipe{position:fixed;inset:0;z-index:9500;pointer-events:none}
.wipe span{position:absolute;inset:0;transform:scaleY(0);transform-origin:top}
.wipe .w1{background:var(--lime)}
.wipe .w2{background:var(--bg-2)}
.wipe.enter span{animation:wipeIn .9s var(--ease-exp) both}
.wipe.enter .w2{animation-delay:.08s}
.wipe.leave span{transform-origin:bottom;animation:wipeOut .9s var(--ease-exp) both}
.wipe.leave .w2{animation-delay:.08s}
@keyframes wipeIn{from{transform:scaleY(1)}to{transform:scaleY(0)}}
@keyframes wipeOut{from{transform:scaleY(0)}to{transform:scaleY(1)}}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:900;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.35rem var(--pad);
  mix-blend-mode:difference;color:#fff;
  transition:transform .5s var(--ease-out);
}
.nav.hidden{transform:translateY(-110%)}
.nav-logo{
  font-family:var(--font-display);font-weight:800;font-size:1.25rem;
  letter-spacing:-.02em;display:flex;align-items:center;gap:.5rem;
}
.nav-logo .dot{width:9px;height:9px;background:var(--lime);border-radius:50%;mix-blend-mode:normal}
.nav-links{display:flex;gap:2.2rem;align-items:center}
.nav-links a{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;position:relative;padding:.35rem 0;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:#fff;transform:scaleX(0);transform-origin:right;
  transition:transform .45s var(--ease-exp);
}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);transform-origin:left}
.nav-links a.active{color:var(--lime)}
.nav-burger{display:none;flex-direction:column;gap:6px;padding:.5rem}
.nav-burger i{display:block;width:28px;height:2px;background:#fff;transition:.4s var(--ease-exp)}

.menu-overlay{
  position:fixed;inset:0;z-index:890;background:var(--bg-2);
  display:flex;flex-direction:column;justify-content:center;
  padding:0 var(--pad);clip-path:inset(0 0 100% 0);
  transition:clip-path .8s var(--ease-exp);
}
.menu-overlay.open{clip-path:inset(0 0 0% 0)}
.menu-overlay a{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2.6rem,9vw,5.5rem);line-height:1.08;letter-spacing:-.02em;
  color:var(--ink);display:flex;align-items:baseline;gap:1.2rem;
  padding:.4rem 0;border-bottom:1px solid var(--line-2);
  transition:color .3s,padding-left .4s var(--ease-out);
}
.menu-overlay a small{font-family:var(--font-mono);font-size:12px;color:var(--mut);letter-spacing:.2em}
.menu-overlay a:hover{color:var(--lime);padding-left:1.4rem}
.menu-meta{margin-top:2.4rem;font-family:var(--font-mono);font-size:11px;color:var(--mut);letter-spacing:.18em;text-transform:uppercase}

/* ---------- shared layout ---------- */
.page{position:relative;z-index:1}
.wrap{padding-left:var(--pad);padding-right:var(--pad)}
.section{padding-top:clamp(5rem,12vh,9rem);padding-bottom:clamp(5rem,12vh,9rem);position:relative}

.label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--mut);
  display:inline-flex;align-items:center;gap:.7rem;
}
.label::before{content:'';width:26px;height:1px;background:var(--lime)}
.label.no-dash::before{display:none}

.h-display{
  font-family:var(--font-display);font-weight:800;letter-spacing:-.03em;
  line-height:.96;text-transform:uppercase;
}
.h-xl{font-size:clamp(3rem,10.5vw,9.5rem)}
.h-lg{font-size:clamp(2.4rem,7vw,6rem)}
.h-md{font-size:clamp(1.9rem,4.6vw,3.6rem)}

.outline{
  color:transparent;
  -webkit-text-stroke:1.5px var(--ink);
}
.lime{color:var(--lime)}
.org{color:var(--org)}
.serif-it{font-family:Georgia,serif;font-style:italic;text-transform:none;letter-spacing:0}

.lead{font-size:clamp(1.05rem,1.6vw,1.35rem);color:var(--ink-dim);max-width:56ch;line-height:1.65}

/* ---------- reveals ---------- */
[data-reveal]{opacity:0;transform:translateY(46px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out)}
[data-reveal].in{opacity:1;transform:translateY(0)}
[data-reveal="left"]{transform:translateX(-46px)}
[data-reveal="right"]{transform:translateX(46px)}
[data-reveal="left"].in,[data-reveal="right"].in{transform:translateX(0)}
[data-reveal="scale"]{transform:scale(.92)}
[data-reveal="scale"].in{transform:scale(1)}
[data-stagger]>*{opacity:0;transform:translateY(34px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
[data-stagger].in>*{opacity:1;transform:translateY(0)}
[data-stagger].in>*:nth-child(1){transition-delay:.05s}
[data-stagger].in>*:nth-child(2){transition-delay:.13s}
[data-stagger].in>*:nth-child(3){transition-delay:.21s}
[data-stagger].in>*:nth-child(4){transition-delay:.29s}
[data-stagger].in>*:nth-child(5){transition-delay:.37s}
[data-stagger].in>*:nth-child(6){transition-delay:.45s}

.word-reveal .w{display:inline-block;overflow:hidden;vertical-align:top}
.word-reveal .w i{display:inline-block;font-style:normal;transform:translateY(110%);transition:transform .8s var(--ease-exp)}
.word-reveal.in .w i{transform:translateY(0)}

.line-grow{height:1px;background:var(--line);width:100%;transform:scaleX(0);transform-origin:left;transition:transform 1.2s var(--ease-exp)}
.line-grow.in{transform:scaleX(1)}

/* ---------- marquee ---------- */
.marquee{overflow:hidden;white-space:nowrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:1.1rem 0;position:relative}
.marquee-track{display:inline-flex;gap:0;animation:marq 28s linear infinite;will-change:transform}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-track span{
  font-family:var(--font-display);font-weight:700;text-transform:uppercase;
  font-size:clamp(1.1rem,2.6vw,1.9rem);letter-spacing:.02em;
  padding:0 1.6rem;display:inline-flex;align-items:center;gap:1.6rem;
}
.marquee-track span::after{content:'✦';color:var(--lime);font-size:.8em}
.marquee.rev .marquee-track{animation-direction:reverse}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.9rem;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  padding:1.05rem 1.9rem;border:1px solid var(--line);border-radius:99px;
  position:relative;overflow:hidden;transition:color .4s,border-color .4s;
  isolation:isolate;
}
.btn::before{
  content:'';position:absolute;inset:0;background:var(--lime);z-index:-1;
  transform:translateY(101%);transition:transform .5s var(--ease-exp);border-radius:99px;
}
.btn:hover{color:#0A0B08;border-color:var(--lime)}
.btn:hover::before{transform:translateY(0)}
.btn.solid{background:var(--lime);color:#0A0B08;border-color:var(--lime)}
.btn.solid::before{background:var(--ink)}
.btn.solid:hover{color:#0A0B08}
.btn .arr{transition:transform .4s var(--ease-out)}
.btn:hover .arr{transform:translateX(5px)}
.btn.orange::before{background:var(--org)}
.btn.orange:hover{border-color:var(--org)}

.link-arrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:.6rem;color:var(--lime);
}
.link-arrow .arr{transition:transform .35s var(--ease-out)}
.link-arrow:hover .arr{transform:translate(4px,-4px)}

/* ---------- hero (subpages) ---------- */
.page-hero{padding-top:clamp(9rem,22vh,13rem);padding-bottom:clamp(3rem,7vh,5rem);position:relative}
.page-hero .h-display{margin:.9rem 0 1.6rem}
.hero-meta{
  display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--mut);margin-top:2.6rem;
}

/* ---------- browser mockup ---------- */
.browser{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--panel);box-shadow:0 40px 90px -30px rgba(0,0,0,.7);
}
.browser-bar{
  display:flex;align-items:center;gap:.9rem;
  padding:.7rem 1rem;border-bottom:1px solid var(--line-2);
  background:rgba(255,255,255,.02);
}
.browser-bar .dots{display:flex;gap:6px}
.browser-bar .dots i{width:10px;height:10px;border-radius:50%;background:#2c2f22}
.browser-bar .dots i:first-child{background:#ff5f57}.browser-bar .dots i:nth-child(2){background:#febc2e}.browser-bar .dots i:nth-child(3){background:#28c840}
.browser-bar .url{
  flex:1;font-family:var(--font-mono);font-size:11px;color:var(--mut);
  background:rgba(255,255,255,.03);border:1px solid var(--line-2);
  padding:.32rem .9rem;border-radius:99px;letter-spacing:.06em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.browser-shot{overflow:hidden;position:relative}
.browser-shot img{width:100%;height:auto;transition:transform 1.1s var(--ease-out)}
.browser:hover .browser-shot img{transform:scale(1.035)}

/* ---------- carousel ---------- */
.carousel{position:relative}
.carousel-viewport{overflow:hidden;border-radius:14px}
.carousel-track{display:flex;transition:transform .8s var(--ease-exp);will-change:transform}
.carousel-slide{flex:0 0 100%;position:relative;user-select:none}
.carousel-slide img{width:100%;height:100%;object-fit:cover;pointer-events:none}
.carousel-slide figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:1.4rem 1.6rem;
  background:linear-gradient(transparent,rgba(6,7,4,.85));
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);
}
.carousel-ui{display:flex;align-items:center;justify-content:space-between;margin-top:1.2rem;gap:1rem}
.car-btn{
  width:52px;height:52px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  transition:background .35s,color .35s,border-color .35s;
}
.car-btn:hover{background:var(--lime);color:#0A0B08;border-color:var(--lime)}
.carousel-dots{display:flex;gap:.55rem}
.carousel-dots button{width:26px;height:3px;background:#2c2f22;border-radius:99px;transition:background .3s,width .3s}
.carousel-dots button.on{background:var(--lime);width:44px}
.carousel-count{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--mut)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);position:relative;overflow:hidden}
.footer-cta{padding:clamp(4.5rem,12vh,8rem) var(--pad) 3rem;text-align:center}
.footer-cta .h-display{font-size:clamp(2.6rem,9vw,7.5rem);transition:color .4s}
.footer-cta a:hover .h-display{color:var(--lime)}
.footer-grid{
  display:flex;justify-content:space-between;align-items:flex-end;gap:2rem;flex-wrap:wrap;
  padding:2.4rem var(--pad) 2.2rem;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--mut);
}
.footer-grid a{transition:color .3s}
.footer-grid a:hover{color:var(--lime)}
.footer-socials{display:flex;gap:1.8rem}
.big-bg-text{
  position:absolute;bottom:-.22em;left:50%;transform:translateX(-50%);
  font-family:var(--font-display);font-weight:800;font-size:24vw;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(239,237,228,.05);
  pointer-events:none;white-space:nowrap;text-transform:uppercase;
}

/* ---------- forms of tags ---------- */
.tags{display:flex;flex-wrap:wrap;gap:.55rem}
.tag{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  border:1px solid var(--line);border-radius:99px;padding:.42rem .95rem;color:var(--ink-dim);
  transition:border-color .3s,color .3s;
}
.tag:hover{border-color:var(--lime);color:var(--lime)}

/* ---------- responsive nav ---------- */
@media(max-width:900px){
  .nav-links{display:none}
  .nav-burger{display:flex}
  .nav.menu-open .nav-burger i:nth-child(1){transform:translateY(4px) rotate(45deg)}
  .nav.menu-open .nav-burger i:nth-child(2){transform:translateY(-4px) rotate(-45deg)}
}

@media(max-width:560px){
  .h-xl{font-size:clamp(2.25rem,11vw,3.1rem)}
  .h-lg{font-size:clamp(2rem,9.5vw,2.7rem)}
  .page-hero{padding-top:7.5rem}
  .hero-meta{gap:1.2rem}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}